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(No Model.) 2 Sheets-Sheet 1.

J. W. EASTON. SHADE FOR ELECTRIC LIGHTS.

No. 449,407. a Patented Mar. 31, 1891.

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(No Model.)

J. W. EASTON. SHADE FOR ELECTRIC LIGHTS.

Patented Mar. 81, 1891..

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UNITED STATES PATENT OFFICE.

JAMES IV. EASTON, OF NEIV YORK, N. Y., ASSIGNOR TO P. MINTURN SlllITI-I,

OF PLAINFIELD, NEIV JERSEY, AND

NEIV YORK.

\VILLIAM I PERRY, OF BROOKLYN,

SHADE FOR ELECTRIC LIGHTS.

SPECIFICATION forming part of Letters Patent No. 449,407, dated March 31, 1891. Application filed March 20, 1390. Serial No. 344,593. (No model.)

To all whom it may concern.-

Be it known that I, JAMES WATSON Easron, a subject of the Queen of Great Britain, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Shades for Electric Lights, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

I-Ieretofore shades for electric-arc lamps have usually consisted of a single piece of glass of globular shape. The first cost of such shade is high, and in case of fracture occurring in any portion thereof the entire shade is ruined and must be replaced by a new one. Furthermore, the globular form of the shade is objectionable, because when the lamp is used for open-air illumination snow, sleet, &c., are retained in the concavities of the globe.

My invention has for its object the provision of a shade in which all the above-mentioned objections are obviated, and which shall be capable of ready adjustment upon the lamp.

To this end my invention consists of a shade composed of separable sections of glass or other suitable material, held together by clamps secured to the lamp. I propose to divide the shade into as many sections as there are side rods in the lamp. These are usually two in number, and in such case the sections would be substantially semi-cylindrical in shape, as shown.

It consists, further, in the novel details of construction and arrangement and combina tion of parts, herein shown and described, and specifically pointed out in the claim.

In the accompanying drawings, Figure l is a view of my invention in elevation; Fig. 2 is a horizontal cross-sectional view thereof on the line 2 2. Fig. 3 is a view in elevation showing a modified construction.

Similar letters of reference are used to desi gnate corresponding parts in all the views.

To the side rods A A of the lamp by which the carbon-holder B is supported in any wellknown manner are clamped the arms C by means of the c. The shade D is formed in semtcylindrical sections, and the edges thereof are bent outwardly to form flanges (Z. The flanges (Z rest against the strips E, which extend from the top to the bottom of the shade, and act as separators for the sections of the shade. These sections are secured in place by the clips E, which embrace the flanges (Z, and which, with the separators E, are secured to the arms 0 by the screws f.

In Fig. l I have shown the shade divided into three sections horizontally. In said con struction the clips F must be long enough, so that they will inclose portions at least of the flanges of each section. With the construction shown in Fig. 3, however, the clips may be very short, and each arm may have a separate clip, if desired.

In Figs. 1 and 2 I have shown a bottom plate G. This is supported by the frame of the lamp, and is not designed as a support for the globe, but merely to close the bottom of the globe and prevent sparks from falling, especially where the lamp is used for interior illumination. For open-air illumination I prefer to omit this feature of the lamp, for the reason that when the bottom of the shade is open snow, sleet, rain, &c., will pass through the shade, and not accumulate therein. As the clips F are preferably in line with the rods A, they will not cut off any of the light rays.

The advantages of my improved shade will be obvious to all practical electricians. The first cost of the shade is very small, and should-a fracture occur in any or either of the sections the broken section may be readily replaced at a fraction of the first cost of the shade, and when used for open-air illumination snow and sleet will not accumulate in the shade.

Another important advan tage is the facility with which one side of the shade may be made opaque instead of transparent, or changed to a reflector by simply providing one or two extra'sections of opaque or s'ilvered glass, which may be substituted for the plain glass at any time.

yoke c and screws or tap-bolts 5o Having thus described my invention, what arms G, connecting said clips and separators I claim as new, and desire to secure by Letters with the side rods of the lamp, substantially 10 Patent, isas and for the purposes set forth.

In a shade for electric li hts the combina- 7 tion of the segmental sec tion s D, provided JAMES EASTON' with the ontwardlyprojecting flanges d, the \Vitncsses: separators E, placed between said flanges, S. G. METCALF,

the clips F, inclosing said flanges, and the CHAS. A. MURPHEY. 

